diff --git a/salt/freifunk/base/wireguard/etc/wireguard/gen-config.sh b/salt/freifunk/base/wireguard/etc/wireguard/gen-config.sh
index bc6c5a86..5c66b779 100755
--- a/salt/freifunk/base/wireguard/etc/wireguard/gen-config.sh
+++ b/salt/freifunk/base/wireguard/etc/wireguard/gen-config.sh
@@ -107,6 +107,7 @@ PublicKey = $WG_PEER_PUBLIC_KEY
 AllowedIPs = $WG_PEER_ALLOWED_IPS
 Endpoint = $WG_PEER_ENDPOINT
 $WG_PEER_PRE_SHARED_KEY
+PersistentKeepalive = 25
 
 EOM